Quiz: How do piston rings contribute to engine efficiency and long September 29, 2025 by Alex Turner How do piston rings contribute to engine efficiency and longevity? Discover more about Vehicle Engine and Automobile at our home page. A) They create a seal between the piston and cylinder wall, reducing oil consumption and improving fuel efficiency. B) They increase the overall weight of the engine, enhancing stability during operation. C) They help in cooling the engine by allowing coolant to flow around the piston. D) They function as a buffer to absorb vibrations from the engine, reducing noise. Submit Answer